Repair of a piece of furniture with four legs, e.g.. chairs, requires simultaneous gluing of the grooves in all of them. We must therefore ensure that all the glued elements are pressed together simultaneously. The most appropriate clamp will be a length of thicker rope wrapped around the legs. We make a double loop from the rope, tightly tied at the ends. Then put a thicker strip between both rolls. A similar mechanism is used in frame saws. By turning the knob, we twist the cord and squeeze the elements.